Global Patent Index - EP 0699692 B1

EP 0699692 B1 2001-05-23 - Aqueous dispersions for adhesives

Title (en)

Aqueous dispersions for adhesives

Title (de)

Wässrige Dispersionen für Klebstoffe

Title (fr)

Dispersions aqueuses pour adhésifs

Publication

EP 0699692 B1 (DE)

Application

EP 95113356 A

Priority

DE 4431344 A

Abstract (en)

[origin: EP0699692A2] Aq. dispersions (I) contg. (A) at least partly grafted cellulose ether, and (B) a copolymer with a Tg of -40-0 degrees C. are obtd. by the copolymerisation of vinyl acetate and ethylene with vinyl esters of 3-18C aliphatic carboxylic acids or (meth)acrylate esters and/or maleic acid diesters of 1-18C aliphatic alcohols, in the presence of 0.05-0.95 wt.% alpha - beta -unsatd. carboxylic acid, 0-0.95 wt.% epoxy or OH gp.-contg. (meth)acrylate ester and 1.5-20 wt.% cellulose ether (w.r.t. total monomer content). Also claimed is the above process for the prepn. of (I). Pref. (I) contains (w.r.t. total monomer content in each case); (a) 1.7-15 wt.% (A), pref. hydrophobically modified hydroxyethyl-cellulose; (b) 50-70 wt.% vinyl acetate. 1.5-9 wt.% ethylene and more than 25 wt.% vinyl 3-12C aliphatic carboxylate, or (meth)acrylate or maleic acid diesters of 1-12C aliphatic alcohols, pref. 2-ethylhexyl acrylate or vinyl esters of 10-11C alpha -dimethyl-branched acids; and opt. (c) up to 10 wt.% water-soluble metal salts.

IPC 1-7 (main, further and additional classification)

C08F 251/02; C09J 151/08

IPC 8 full level (invention and additional information)

C08L 1/26 (2006.01); C08F 2/44 (2006.01); C08F 251/00 (2006.01); C08F 251/02 (2006.01); C08L 1/00 (2006.01); C08L 33/04 (2006.01); C08L 33/06 (2006.01); C09J 101/26 (2006.01); C09J 105/00 (2006.01); C09J 133/04 (2006.01); C09J 133/06 (2006.01); C09J 151/08 (2006.01)

CPC (invention and additional information)

C08F 251/02 (2013.01); C09J 151/08 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB IE IT LI NL SE

EPO simple patent family

EP 0699692 A2 19960306; EP 0699692 A3 19971022; EP 0699692 B1 20010523; AT 201422 T 20010615; DE 4431344 A1 19960307; DK 0699692 T3 20021202; ES 2158920 T3 20010916; JP 3957335 B2 20070815; JP H08176241 A 19960709; TW 349114 B 19990101; US 5665816 A 19970909

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